different protocols on same IR reciver...does it work?

From: Sudip Midya (sudip05_at_mailcity.com)
Date: 08/19/04 

Date: 18 Aug 2004 22:40:36 -0700

Hi Everybody,
I am working on RMAP protocol.I have a decoder which can decode RMAP
and MIT protocol.
This decoder works on RMAP protocol when the IR receiver is
R3302,IR_REC_V_56KHz_TSOP2256VI1(not sure who is the manufacturer).
The decoder also works on MIT protocol,when the IR receiver is
TSOP1133(dont know who is the manufacturer).

Observation:
(1)Since the decoder works fine for both the protocols at different
receivers, so I am sure that the decoder is working fine(else it
wouldnt have worked at all).
I want to make the decoder work for RMAP protocol also, when the
receiver is TSOP1133(the second case)...in this scenario, it's now
working only for MIT.

I want to know:
(a)Should the IR receiver work for all the protocols? If not why and
what are the factors that prevent it from working.
My Guess: If the carrier frequencies for the protocols do not match,
maybe the IR receiver wont be able to decode it. Is this true? where
can I find more information about it?

(b)What is the carrier freq's for RMAP and MIT protocol?
My confusion: Do the carrier freq depend on the protocol or the remote
control itself?

If anybody is having domain knowledge on this, pls pls respond soon.

Thanks,
Sudip

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